There are several options for numbering envelopes. They may
be numbered with a standard consecutive number or they can be numbered by using
a bar code system, which can be a consecutive or a static number.

Consecutive Numbering

Consecutive numbering changes sequentially from envelope to envelope.

It can be used as a control feature to provide a distinct identity to each
envelope.

Several digit sizes are available for consecutive numbering and some manufacturers
of envelopes may offer more than one size.

Alphabetic characters can also be used as a prefix or suffix to the number.

Numbering can be applied on almost any type of envelope.

A consecutive number can be printed in almost any location on an envelope.
The number can be printed parallel or perpendicular to the rest of the copy
on the envelope and multiple numbers can also be printed on an envelope. It
is best to check with your supplier for their capabilities as this may differ
between suppliers.

A two-way mailer could be used to furnish a gift
certificate to the customer to encourage them to place an order. The
certificate would be torn off at the perforation and sent back with
the order.

An open end envelope has an extended flap with a
perforation which acts as a receipt. The receipt is torn off the flap
and given to the customer. The customer will use the claim number
for reference in any dealings that pertain to that item.

Bar Code Numbering:

Bar code numbering is used on many types of envelopes to code and decode
information automatically.

It consists of bars and spaces of various sizes.

The bar codes can be static (the same number on each envelope) or consecutive
(sequential from envelope to envelope).

The scanned information is received without the input errors that can occur
with the use of traditional methods of entering data. Bar coding is a much
more reliable, faster, and efficient method of gathering information.

The business reply envelope above shows an example of a static bar
code being used. The Postnet bar code is used to encode the zip code
on the envelope, helping the mail be sorted accurately and quickly.
Click on the link below to see information on other types of bar coding
that are available.